Automobile heater



oct. 12,1926.

A, MARKESON AUTOMOBILE HEATER Filed May 11,' 1923 line 3-3 of Fig. 1;

Patented Oct. 12, 1926.

UNITED f STAT-E s `P'ATlazlaT OFFICE.

ARTHUR MABKESON, 0F LA SALLE, MINNESOTA.

AUTOMOBILE HEATER.

Application led May 11,

My invention has `for its-object to provide a simple, but highly ellicientheater for an automobile, utilizing the heat from. the exhaust manifold.

A more specific object is to'utilize the within the back portion of the engine hood, whichhas already been heated bythe engine to some degree. l

A further object is to provide such a device having a means for warming simultaneously the feet of both the ydriver and occu- Vand set forth in the claims.

My invention, in its preferred form, is illustrated in the accom anying drawings, wherein like notations re er to similar parts throughout the several views, and, in which Fig. 1v isa side elevation of a part of the front portion 'of an automobile, partly broken away, showing'my improved heater applied for usage thereon;

Fig.- 2 i la vertical section taken on the line 2--2 of Fig. 1;

Fig. 3 is a. vertical section taken on the Fig. 4 is a slmilar view taken on the line 4-4 of Fig. 1; and

Fig. 5 is a (plan view, partly broken away, of my heat istributing means.

The numeral 6 designates the hood of an automobile of common type, 7 the engine, 8 the fan, 9 the foot-boards, 10 the dashboard, 11 the foot pedals and 12 the exhaust manifold.

An elongated vcasing 13, preferably con- I structedof sheet metal and for most of its length of U-shaped cross section, encloses the to of the manifold 12 and is snugly secure at its lower yedges about the sides of the'same. Its open front or receiving end 13'L is directly behind the fan 8 and adapted to receive a current of air from the fan when the engine is running, while its rear or delivery end is diminished into an outlet neck 14, which telescopes into the receiving neck 15 of a heat distributing means to be later described. The casing 13 is equipped at its ends 13* and 1li-with the valves 16 and 17 controlled by the operating rods 16* and 17, which are connected to the valves and extend through the dash-board 10 where the ends are equi pcd with suitable handles located for the rivers ready ma- -the .rear end 14 of .the main casing.

aux1l1ary casing thus "co-operates with the 1923. Serial kNo. 638,182.

nipulation. An auxiliary `casing 18 also of U-shaped construction is superimposed on the main casing 13 snuglylitting-the same,

having its front end secured tightly against the front 13a ofthe main casing and having its rear end located within the back portion Vof the hood 6 and near the rear end of they manifold 12 and held in spaced relation from ,The

main casing 13 to form a'chamber open at the rear end vand closed at its front' end and diminishing uniformlyin height throughout its length. Thisy chamberl so formed in the casing 18 is connected to the intermediate portionof the maincasing 13 by means of an opening 19 in the topy of the casing 13.

In making this opening19, the casing is cut o r punched on three sides leaving the front side uncut, so that the cut portion may be bent downward somewhat,'to form a guard lip 20, the purpose of which will subsequently be explained.

The heat distributing means, previously spoken of includes a foot warming casing 21, preferably 'constructed .of some thin heat conducti-ng material, which rests on the foot boards 9 'of the automobile atthe side of the foot pedals 11 and, as stated, isconnectefd telescoping neck 15. Within this casing 21, as shown in Fig. 5,' adjacent the neck 15 isfa curved deiector plate 22 adapted to force the hot air admitted to circulate throughout the casing and heat the same. At the end- -will be set up through themain casing. This current will be drawn from the cold air passing through the radiator and the valve 17 will be adjusted to sufficiently restrict the opening at the forward end of the main casing to admit only enoughair to set up a .main circulation adequate to draw or induce an auxiliary currentthrough the casing 18. Casing 18 receives air preferably from'beneath the rear ortion of the hood Wherethc air is more or ess warmed over the rear end to the delivery end of the main casing by its of the manifold and the rear portion 'of the engine. Thus a large amount of lthe 'air passing over the'heated manifold has already been heated to some extent. 1n the l passage over the main casing the comparatively warm auxiliary current is heated somewhat by the radiation from said mam casing and is introduced into the main curlation of cold air is set up through the casing taken adjacent the radiator and conse-l quently the heat from the manifold will not be suiiieient to warm this large amount of cold air forced through the casing at a high rate of speed. Applicantis able to set up a restricted How of air taken fro-m adjacent the radiator and an auxiliary current taken from a relatively warm area whereby the main current will not only flow considerably slower, but will be comparatively warm before passing over the manifold. l

Depending lip 20 materially assistsin causing a strong induced current through auxiliary casing 18, by lessening the upward pressure of the main current as it passes the opening 19.

The foot warming casing 21 thus acts as a heat reservoir for the use of the feet of a assenger, while the drivers feet are 'also Eept warm by the current of hot air directed on and about the driving pedals. This escaping hot air is then free to circulate within the automobile or inside of a robe, if one is used.

The applicant, in actual usage, has found the induced current of air taken within the rear portion of the hood to be remarkably efficient for quickly supplying a large amount of heat. By experience, he has found that with his improved device, he can in five minutes get a certain degree of heat discharged, while without the induced current it takes fifteen minutes to gain the same tem erature.

T ie two valves 16 and 17 at oppositeA ends of the main casing permit the heater to be very satisfactorily adjusted. The valve 17 at the front end of the casing regulates the current forced through by the fan8, while the smaller valve 16 at the rear of the main casing 13 directly controls the amount of heated air admitted to th'e distributing means.

The auxiliary casino' 18, besides effecting the induced current oiP air2 also provides an insulated protective'covering for the main casino' 13. Thus the main casing is 'Well shielded from the current of cold air eX- j pelled by the fan 8.

I llt will, of course, be understood that various changes may be made in the form, details and arrangement of parts without departing from the scope of the invention.

What is claimed isz- 1. An automobile heater including an open ended casing adapted to be disposed on the exhaust manifold of an automobile having its delivery end in communication with the interior of said automobile and having a relatively restricted receiving end disposed adjacent the fan of said automobile whereby a .restricted current of comparatively cool air may be set up in said casing and a passage-extending forwardly along the side of said casing and communicating at its forward end with the interior of said casing, the rear end of said assage being open to introduce heated air fiiom beneath the hood of said automobile into the current of air through said casing.

k2. An automobile heater comprising an open-ended casing adapted to be disposed on the exhaust manifold of an automobile having its delivery end in communication with theyinterior of said automobile and having a relatively restricted receiving end disposed adjacent the fan of said automobile .whereby a restricted main 'current of comparatively cool air may be set up in said casing, and an auxiliary casing communicating with said main casing and having its receiving end disposed to receive comparatively warm air about a com aratively warm portion of the automobile wiriereby a current of comparatively warm air will be introduced intosaid main current.

3. An automobile heater comprising an open-ended casing adapted to be disposed on the exhaust manifold of an automobile having its delivery end in communication with the interior of said automobile and its receiving end disposed adjacent the fan of said automobile, means to partially close the receiving end of said casing whereby a restricted current of comparatively cool air l may be set up therein, and an auxiliary casing embracing the main casing and forming therewith a chamber with a closed end and an open receiving end disposed within the rear portion of the automobile hood, said chamber communicating with said main casing whereby a. current of comparativelyv warm air will be introduced into said main casing through said auxilia j casing.

4. The structure set forth 1n claim 3, said main casing having an opening therein communicating with the interior of said auxiliary casing and a depending defiecting lip disposed forwardly of said opening and extending downwardly and rearwardly.

In testimony whereof I affix my signature.

ARTHUR MARKESON. 

